Pinpoint Test L : DTCS P0720, P0721, P0722: Notes
Refer to Transmission Controls - MPS6 for schematic and connector information.
Normal Operation and Fault Conditions
The OSS sensor is a Hall-effect sensor that sends a signal to the PCM that indicates transmission output shaft speed. The OSS sensor is used for TCC control and shift scheduling.
DTC Fault Trigger Conditions
| DTC | Description | Fault Trigger Conditions |
|---|---|---|
| P0720 | Output Shaft Speed Sensor Circuit | No input from the OSS sensor. |
| P0721 | Output Shaft Speed Sensor Circuit Range/Performance | Unrealistic change in the OSS sensor signal, erratic or intermittently no input. |
| P0722 | Output Shaft Speed Sensor Circuit No Signal | No input from the OSS sensor. |
Possible Sources
- Connectors damaged or pushed-out terminals, corrosion, loose wires and missing or damaged seals
- OSS sensor
- PCM